The toll of Israeli strikes on Gaza The destruction to Gaza during the 11-day conflict between Hamas and Israel in May was heavy and widespread, with damage afflicting hundreds of buildings and dozens of roads, an initial United Nations analysis shows. The data, based on preliminary analysis of satellite imagery taken on May 28, and released by the U.N. Institute for Training and Research this week, underscores warnings from human rights groups and nongovernment organizations that Israeli bombings that the military said targeted Hamas militants severely impaired the territory’s infrastructure, and that it could take years to rebuild. The U.N. data shows that along some 140 square miles, 459 buildings were destroyed or damaged, some of which were near hospitals, clinics and schools. The United Nations said on May 21 that six hospitals and 11 clinics were damaged, as well as 53 schools. Forty impact craters were detected on roads, which health-care providers...